Exam 2: Linkage, Recombination, and Eukaryotic Gene Mapping

Question 1

Linked genes ___ sort ___

Answer 1

do not, independently

Question 2

Linked genes definition

Answer 2

Genes that segregate together and cross over produce recombination between them

Question 3

Recombination frequency =

Answer 3

(# of recombinant progeny/total progeny) * 100%

Question 4

Recombinant phenotypes

Answer 4

Normally present in the lowest frequencies

Question 5

Coupling (cis)

Answer 5

One chromosome’s alleles are both wildtype and the other chromosome’s alleles are both mutant

Question 6

Repultion (trans)

Answer 6

Each chromosome contains one wild-type allele and one mutant allele

Question 7

What is the description in gene mapping due to?

Answer 7

Double crossing over

Question 8

Map distances ___ as recombination rates increase

Answer 8

increase

Question 9

What do you compare the recombination genotpes to to see where the recombination occurred?

Answer 9

The non-recominbant genotypes

Question 10

Recombination frequency =

Answer 10

(number of individulas with certain recombination + double recombinants/total progeny) x 100%